Epistasis

Question 1

What is Epistasis?

Answer 1

• This is the interaction between pairs of alleles/genes at different loci.

Question 2

What does it involve?

Answer 2

• The pair of alleles at one locus masking the effects of another gene.

Question 3

What is an epistatic gene?

Answer 3

• The gene that masks the expression of another gene.

Question 4

What is a hypostatic gene?

Answer 4

• the gene is masked by the epistatic gene.

Question 5

What can epistasis be?

Answer 5

• recessive
• dominant
• complementary

Question 6

What is recessive epistasis?

Answer 6

• the homozygous recessive genotype at the epistatic locus masks the effect of the pair at the hypostatic locus

Question 7

What is dominant epistasis?

Answer 7

• the homozygous dominant or heterozygous masks genotype at the epistatic locus masks the effect the pair of alleles at the hypostatic locus.

Question 8

REMEMBER

Answer 8

• Epistasis is an interaction between genes at different loci codominance is an interaction between alleles at the same locus.